Diagnostic Starting Point. Chevrolet PJJ 2000

For 1990-2009 cars

Begin the system diagnosis with A Diagnostic System Check - Radio/Audio System. A Diagnostic System Check - Radio/Audio System will provide the following information:

• | The identification of the control module(s) which command the system.

• | The ability of the control module(s) to communicate through the serial data circuit.

• | The identification of any stored diagnostic trouble codes (DTCs) and their status.

The use of A Diagnostic System Check - Radio/Audio System will identify the correct procedure for diagnosing the system and where the procedure is located.